9.9.9
Reverse action of the control function
Val>Set=n+
For the effect of the regulation there are two functions:
•
ON
for
“
Val > Set = n+
”
≙
increasing Fanlevel for increasing actual value
over Setpoint
•
OFF
for
“
Val > Set = n+
”
≙
increasing Fanlevel for decreasing actual value
below Setpoint.
For special applications an external switch over of the control function is
possible (
F
IO Setup).
Factory setting depend-
ing on selected mode
Example for temperature control (Idealized principle diagram)
Mode
Controller
function
nM
100 %
I
S
R
R
OFF
ON
10.05.2007
v_umkehr_regelfunktion.vsd
nM Motor speed
R Pband
S Setpoint
I Actual value
OFF for Val > Set = n+ = heating function
ON for Val > Set = n+ = cooling function
1.01
none
2.01
...
ON
3.01
...
ON
4.01
...
OFF
5.01
...
OFF
6.01
...
OFF
9.9.10
Controller con
guration
The
“
controller con
guration
”
is automatically carried out during selection of the application related
mode of operation (Base setup). The factory presets in accordance with the mode of operation are
based on many years of experience, which is suitable for many applications. Under special circum-
stances, these can be individually adapted (
F
Menu group
“
setting
”
).
Type of control
The type of control determines the method with which the controlled value
behaves in case of a difference between the target and current values. For
this, the control technology has standard algorithms, which consist of a combi-
nation of three methods:
Selection P, PID:
•
P
control (Proportional component, proportion of the absolute deviation)
•
I
control (Integral component, proportion of the sum of all deviations)
•
D
control (Differential component, proportion of the last difference)
With pure P controllers (controller type
P
), the following described settings do not have any function.
If needed, the most suitable combination for the respective control system can be determined from
these proportions.
KP
P-component = reaction time
Setting range: 0 - 200 %
smaller = more slowly
bigger = faster
KI
I-component = accuracy, correction time
Setting range: 0 - 200 %
bigger = faster
smaller = more slowly
Operating Instruction
Econtrol
–
model series EXDM
Programming
L-BAL-E008-GB 0945 Index 005
Part.-No. 00156742-GB
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